Simple Part, One Critical Dimension
A spacer just sets a gap — but that gap usually has to be exact, and across a batch every spacer has to be the same length so stacks and assemblies add up. The two things that matter are length tolerance and parallel, square faces; the bore is sized to clear the bolt or fit the shaft. It sounds trivial, and that's exactly why imprecise spacers cause so much grief downstream. We machine them to a controlled length and keep the batch consistent.
Custom Spacer Specifications
| Attribute | Capability |
|---|---|
| Materials | Aluminium, steel, stainless, brass, Delrin/nylon/PTFE |
| Shapes | Round, hex, square, shouldered, stepped |
| Length tolerance | ±0.02–0.05 mm (tighter on request), parallel faces |
| Bore | Clearance or fit to bolt / shaft |
| Finish | As-machined, anodize, plate, bead blast |
| Quantity | One-off to high-volume batch |
Spacer Types We Machine
- Round bore spacers — the everyday standoff between parts
- Shouldered / stepped spacers — locating on one face
- Hex spacers — for tool grip or appearance
- Precision shim-style spacers — very tight length
- Wheel & hub spacers — automotive (see our wheel spacer case)
Spacer or Standoff — Which Do You Need?
The two get mixed up: a spacer is an unthreaded tube you pass a bolt through to set a gap; a standoff — what many catalogues sell as a threaded spacer — has an internal thread (male-female or female-female) so parts screw into it. We make both — if your part is threaded, see custom standoffs; if it's a plain through-bore, you're in the right place.
Material Choice
Metal spacers are the default wherever a bolt is torqued through them: 6061 aluminium spacers are light and cheap for general use; steel and 304 / 316 stainless steel spacers carry clamp load and resist corrosion outdoors; brass spacers machine to a fine finish and break galvanic pairs; plastics (Delrin, nylon, PTFE) insulate or run quiet. For larger plastic quantities we can mold instead of machine — part of being a full custom parts maker in any material. Tell us the bolt size, the gap you need and the load, and we'll recommend.
Need an odd length you can't buy off the shelf? That's exactly what custom spacers are for. Send the bore, OD and length (or a sample) and we machine them to size — one or a thousand. No drawing required.
Spacer Weight & Material Cost — Compare Live
A spacer is a plain tube, so material choice shows up directly as weight and cost. Aluminum 6061 keeps a stack light; stainless and steel carry more load; nylon or Delrin insulate and damp. Enter the outer diameter, bore and length to compare the exact weight and relative material cost of each option:
Frequently Asked Questions
Yes — length is the critical dimension and we hold it tight (commonly ±0.02–0.05 mm) with parallel faces, consistent across a batch so stacks add up.
Aluminium, steel, stainless, brass and plastics, from tiny precision spacers to large bush-style ones — round, hex, square or shouldered.
Both — a single custom spacer with no setup fee, or batches of identical spacers for assemblies and kits.
Yes — send the spacer or just the bore, OD and length and we machine matching ones. No drawing needed.
Quote a Custom Spacer
Sizes, sample or drawing — all accepted. Reply in 24h.
// Qty & price
1 pc
Sample price
Confirm fit before a run
3–10
Unit price drops
Setup cost shared
10+
Best price
All tiers quoted upfront
- →No distributor — you pay the maker directly
- →CAD saved after first order — reorder anytime at lower unit price